Behringer ddx3216 Instructions Manual page 10

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PHYSICAL OUTPUTS
All physical outputs can be used for the surround option, ideally an 8-channel
or a multi-channel output module, or for example the 4 integrated multi-outputs
together with the control room out L/R.
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OPTIMAL SPEAKER ARRANGEMENT
The optimal 5.1 surround speaker arrangement assumes an angle of 30° off
the 0° axis to the left/to the right for the front left and right speakers; for the
back surround speakers, this angle should be 110° to the left/to the right.
The subwoofer does not necessarily have to be in the middle; it can also be
placed halfway left or right in the front listening area, provided that the critical
frequency is not too high. The human ear can not physically locate low
frequencies (under 100 Hz); therefore, the position of the subwoofer is not so
critical.
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